Cal. Harb. & Nav. Code § 495.6

After the attachment is levied, the owner, or the master, agent, or consignee of the vessel, may, in behalf of the owner, have the attachment discharged, upon filing with the court, subject to the provisions of Section 489.060 of the Code of Civil Procedure, an undertaking in an amount sufficient to satisfy the demand in the suit, besides costs. Upon receiving notice of the filing of the undertaking with the court, the sheriff or marshal shall restore to the owner, or the master, agent, or consignee of the owner, the vessel attached.